<template>
<div>
  <el-row><el-col :span="6">{{value}}</el-col></el-row>
  <el-row>
    <el-col :span="6">
      <el-select v-model="subs1">
        <el-option
          v-for="item in options"
          :label="item.label"
          :value="item.value">
        </el-option>
      </el-select>
    </el-col>
    <el-col :span="6">
      <el-select v-model="subs2">
        <el-option
          v-for="item in subs1"
          :label="item.label"
          :value="item.value">
        </el-option>
      </el-select>
    </el-col>
    <el-col :span="6">
      <el-select v-model="value">
        <el-option
          v-for="item in subs2"
          :label="item.label"
          :value="item.value">
        </el-option>
      </el-select>
    </el-col>
  </el-row>
</div>
</template>

<script>
  export default {
    props: {
      options: Array
    },
    data () {
      return {
        subs1: [],
        subs2: [],
        value: ''
      }
    }
  }
</script>
